Typewriting machine



Feb. 15, 1927. 1,617,695

J. WALDHEIM TYPWRITING MACHINE Filed Deo. 15. 192.4

Patented Feb. 15, 1927.

UNITED STATES PATENT OFFICE.

JOHN WALDI-IEIM, OF ELIZABETH, NEW JERSEY, ASSIGNOR T0 UNDERWOOD TYPE-WRITER COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MACHNE.

Application led December 15, 1924. Serial No. 755,905.

This invention relates to sound-proof cabinets for typewriting machines,and more particularly to means to partially open the normally closedcabinet to give access to finger-pieces on the carriage.

Sound-proof cabinets have been provided for typewriting` machines inwhich the iinger-pieces on the carriage of the typewriting machineextend through a slot 1n the cabinet to the exterior thereof, so thatthe carriage may be operated from the outside. In cabin-ets of this kindit is not only necessary to replace the usual inger-pieces on thecarriage by especially long ones, but it is also necessary to providethe cabinets with suitable slot-sealing devices to prevent leakage ofsound from the cabinets and between which said finger-pieces extend.

An object of the present invention is to so construct a sound-proofcabinet that it may be produced at a minimum ot cost. To this end, thenecessity of special fingerpieces on the typewriter carriage has beenavoided. The usual finger-pieces are used, and provision is mad-ewhereby the cabinet may be partially opened so that the .hand of theoperative may pass through lsaid opening to said finger-pieces tomanipulate the carriage.

The cabinet ot this invention is composed of a loody-part to tit aroundthe frameof 1 the machine and a cover on said body-part.

Said cover extends over the carriage oi" the machine and is pivoted onthe body-part in such a manner that it may be swung in the direction inwhich the hand is moving` when reaching for the desired finger-piece onthe carriage.

A finger-piece in the form of a flange is provided at the upper end ofthe cover with which the hand may lirstengage to open the cabinet, afterwhich the same hand may slip down from said finger-piece through theopening to the desired finger-piece on the carriage. A hand orlinger-rest is provided on the body of the cabinet along which theiin-ger may sli-de while the carriage is being returned to the beginningof a writing` line. The lingerpiece on the cover is elongated andextends the full length of the cover, so that it may be engaged at anypoint lengthk wise thereof according to the posi-tion of thefinger-pieces on the carriage. To facilitate opening the cabinet, thereis connected to the cover a spring which normally tends to open sai-dcover but is overcome by the weight oi the cover, the center of gravityof which is to one side oi its pivot. Said spring is also ett'ective tohold the cover open when it is swung .all the way back.

Instead of opening the cover with the same hand which is to engage thengerpiece, as above explained, it may be desirable at times to open thecov-er with one hand while the other reaches through the opening to thefinger-piece on the carriage, To this end there is provided a key whichmay be support-ed on the body of the cabinet, said key when actuatedbeing effective to push the cover back to open the cabin-et. It will beunderstood that the cov-er may be sprung back a considerable extent. forthe purpose of giving access to the platen, as, for instance, wheninserting` a new work-sheet into the machine. rPhe key for swinging saidcover, however, is effective to swing said cover only a short distancesuiiici-ently to permit passage ot the hand into the cabinet. To permitthe cover to be swung through a predetermined distance by the key, thereis provided a stop to limit the motion of said key.

The cabinet is composed ot' three parts, namely, a pack or shoe t0 fitaround the vframe of the machine, a cover pivotally sii-pported on saidshoe, and extending over the carriage, and a front plate against whichthe coverrests. Both the shoe and the front plate are secured to thetypewriter frame. The cover is pivoted on the shoe and is inclinedupwardly and forwardly and abuts against inclined flanges at the sidesof the front plate.

Other features and advantages will hereinafter appear.

ln the accompanying drawings,

Figure l is a side view of the casing` in elevation, showing the coverpartly open for operating the carriageecontrol levers.

Figure 2 is a closssectional View in elevation through the line 2 2 ofFigure 4, showing the cover closed and the typewriting machine enclosedtherein.

Figur-e 3 is a fractional view in crosssection through the line 3-3 ofFigur-e 4, and shows one of the devices for partially CII opening thecover to operate the carriagecontrol levers.

Figure 4e is a front view of the casing in eleva-tion, and shows thediterent sect-ions composing the same.

The Underwood standard typewriting machine comprises a main frame 10,and has a forward extension 11 carrying banks oi keys 12, operatingtype-bars 13 to cause types 1d to strike against a platen 15 journaledin platen-frames which form part of a carriage 16. Said carriage ismounted for letter-feed movement upon rails which form an integral partotl the main frame, and is provided with controlling` levers 17 foroperating the carriage and the platen.

It is tor the deadening of the sounds arising ft'rom the operation ot atypewriting machine ot this general character that this sound-deadeningcasing is provided.

Referring more particularly to Figure 2, it will be seen that the casingis normally closed and that a cover 18 is held in a closed position byits own weight and against a .spring 19, which tends to open the samebut is not strong enough to overcome the weight of the cover 18. Thefunction of said spring is to counterbalance the weight ot the cover, sothat the same may be rocked on 'tulcrtnnscrews 20 and swung backwardlyto partially open the same, as shown in full lines in F igure 1, with aminimum eiiort on the part oit the operative.

In order to operate the carriage-control levers normally enclosed in thecasing, it is necessary to partially open the cover 18 so that the handmay reach through the opening to the levers, as indicated in Figure l,in which a linger 21 is shown in the slot torn'ied between the cover 18and a front closure 22. The cover may be either pushed backwardly by theend of the lingers striking a rib 23 along the frontedge, or it may beoperated by means ot one ot two buttons 24. at both extreme ends of theiront closure 22. Said button 24 vis 'fast to a plunger pin 25 aroundwhich a spring 26 is wound to restore the same to normal position, asshown in Figure 3. The spring 26, as shown in the drawings, is acompression spring and actuates between the button 24 and a narrowedportion 2T in a hole which serves as a. bearing for the plunger 25. Saidplunger is provided with a rounded end 2S tor engaging the edge 29 otthe cover 18.

The casing comprises three main parts or sections, a lower member 30upon which there is rockably mounted the cover 18, and the front closure22.

The lower boXdike member 30 is designed to snugly lit over thetypewriter framework, to which it is fastened by means of the regulartypewriter feet 31, which serve as means tor holding the lower memberand the frame ot the typewriter together. The member 30 is provided witha lining 5d of some sounddeadening material, and the feet 31 are screwedinto the typewriter trame through holes in the member 30 in positionscorresponding to the tapped holes in the iframe.

The front closure is Jlistened to the typewriter trame by nieans otscrews S32 in place of the usual tront plate tound in the Underwoodmachine. Said front closure extends the 'full width ot the cover 18, andat the ends there rre provided rearwardly-extending portions 32-3 whichsnugly lit the outline ot the lower .member SEO at The bor-- ders oi theAfront closinfe are provided with asott strip der` e'ned to etl'ectivelyclose the opening 'l'orm d itfetwcen said nt cio-- sure and the cover1S. '.lhcre is also proviced a lfelt covering' 36 fast to the inner sideoJ the iront cloznire. At the ends oi the ,Front closure there areprovided boss s 3i" ior receiving the plung rs 25, the ohpat ot' whichhas been hereinbeime described.

in order that a worloshee' may be insei-ted around the platen 15, thecover dcsigned to be swung itarther bach to a position shown indot-and-dash lines in Figure 1.. For this purpose there is provided astop device which comprises a pin 3S and a bent portion l() which Jformsan integral part oi the cover 18. lt will be noted that the spring 19assists in keeping the cover in this po tion against the stop pin 89.Another ifeature ot the cover is a pocket ll1 at the rear .i'orreceiving the overhanging portion ot the work-sheet, said pocket boing'formed hf.' the rear wall 4-2 ot the lower meniher SEU. the rear walli3 ol the cover 1H, and a lower connecting wall which toi-nis aninten-ral part ot said cover and extends iiorw; y to moet the wall at lnorder to lower the .tuicrum poi .t upon which the cover swung, there areprovided two down wardlvextending ears lit, which serve as bearing-a forthe 'lulcruni fufrows 20. 'the wall El it; iorwardly extended to tornipockets :it the ends in which the carriage enters when le.- ter-spacedto a position beyond the vtraine o' the machine, and is providml with annpwardly and forwardly extending portion el? in line with an extensionl-S. which i'orms z n integral part of the front closure 22.

The printing point rendered visible h v the provision ot a window in thecover 1S. having a glass el!) fastened to the cover by means oli a plate5() and screws 51. will he noted that at the front the glass is held ina groove 52, while at the sides (not shown) and at the rear provision isonly made tor holding the glass against outward pressure, so that theglass may be inserted in the groove 52 and .Forced into place and heldthere by means ot the plate 50.

In order to further deaden the noise arising from the operation of themachine, the cover is provided with a lining 53 of sonic llo'sound-deadening material, suoli as felt. Said lining is also extendedto cover the pockets for the carriage at the ends of the cover.

It will be seen that the casing is of such construction that when thetypewriter is operatively installed therein there is no opening throughwhich the sound arising from the operation of the machine may escape.This invention therefore provides a sounddeadening casing which,although not so etlicient in regard to operation of the carriage-leversas those casings provided with slot-sealing cushions through which thecarriage-controllinglevers protrude, is more efiicient in itsnoise-eliminating properties, and has the added advantage that thetypewriter may be placed in the casing with little or no alterationthereof.

It will also be seen that, due to the general design ot the differentsections composing this casing, the same adapts itself to beinterchangeably manufactured within liberal limits, and therefore can beproduced at a comparatively low cost.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, I claim:

l. The combination with a typewriting machine having a carriage andfinger-pieces on said carriage, ot' a closed sound-proof cabinet toenclose the machine, including said finger-pieces, said cabinetcomprising a closing element pivoted to swing mainly rearwardly in thevicinity of said fingerpieces, and movable rearwardly out of the way bymovement of the hand of the operative rearwardly toward any one of theHilger-pieces on the carriage, to partially open said cabinet to form afront lia-nd-l opening to give access to the finger-pieces on thecarriage.

Q. The combination with a typewriting machine having` a carriage andfinger-pieces on said carriage, ot a closed sound-proof cabinet toenclosefthe machine, including said finger-pieces said cabinetcomprising a closing element pivoted to swing mainly rearwardly in theIvicinity 4of said fingerpieces, and movable rearwardly out of' the wayby movement of. the hand of the operative rearwardly toward any one ofthe linger-pieces on the carriage, to partially open said cabinet toform a front handopening to give access -to the finger-pieces on thecarriage, and a finger-piece extending along said pivoted element andengageable anywhere throughout the length of the pivoted element, foropening the same.

3. The combination with a typewriting machine having a carriage andfinger-pieces on said carriage, of a closed sound-proof cabinet toenclose the machine, including said linger-pieces, said cabinetcomprising a closing element pivoted to swing mainly rearwardly in thevicinity ot said fingerpieces, and movable rearwardly out of the way bymovement of the hand of the operative rearwardly toward any one of thefinger-pieces on the carriage, to partially open said cabinet to form afront handopening to give access to the iing'er-pieces on the carriage,a finger-piece lextending along said pivoted' element and engageableanywhere throughout the length of the pivoted element, for opening .thesame, and a finger-rest on said cabinet adjacent the opening. y

4. Thel combination with a. typewriting' machine having a carriageandlnanipulable devices on said carriage, of va closed soundproofcabinet to `enclose the machine and manipulable devices and render thelatter inaccessible, said cabinet comprising a bodypart, a cover on saidbody-part, 'a {ingerpiece connected to said cover to .swing it topartially open said cabinet to ,givev access to the manipulable ydeviceson the carriage, and means tor limiting the extent of opening of said'cabinet yeffected by said finger` piece, to form no more than ahand-opening.

5. The combination with a typewriting machine having a carriage andmanipulable devices on said carriage, of a sound-proof cabinet toenclose the machine and said devices, said cabinet comprising abody-part, a cover on said body-part, a finger-piece connected to aplunger to swing said cover to partially open said cabinet to giveaccess only to the manipulable devices on the carriage, and a stop toengage said plunger t-'o determine the extent of opening of 'said cabinet effected by Asaid coveliswingin-g fingerpiece.

6. The. combination with Ia typewriting machine having 'a carriage 'andfinger-pieces 'on said carriage, 'ot a yclosed sound-proof lcabinet toenclose the machine vand the finger-pieces, in their entirety', saidcabinet comprising a. pack fitted around the 'frame of the machine, afront plate carried by the machine and. a fcover pivoted on said pack,and a finger-piece on -said front plate to swing said cover to partiallyopen said cabinet to form a hand-'opening to give access to thefinger-pieces on said carriage.

7. The combination with va typewriti'ng machine, of a soundfproofvcasing for said machine, said lcasing comprising a body-part to fitaround the frame of said machine and a cover pivoted on said body-part,and a detachable front plate, said front plate having rearwardextensions to form with said cover carriage-chambers extending beyondthe sides of said body-part, the bottom of said cover being inclinedupwardly and forwardly, said front plate having inclined flanges 'ati-ts sides with which the inclined portion olf the cover engages. v

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8. The combination with a typewriting machine having a carriage, of a.sound-deadening cabinet for said machine, said cabinet comprising a packfitted around and directly upon the frame of the machine, means to clampsaid pack to said frame to subdue noise vibrations, a cover pivoted onsaid pack, said cover substantially longer .than said pack, to form achamber' in which the carriage may travel, and having ends overhangingsaid pack, a frontplate secured to the frame of the machine, said frontplate serving as a front closing abutment for said cover, and meanspartly on said front plate and partly on said cover, for closing thebottom of the overhanging ends.

9. The combination with a typewriting machine, of a sound-deadeningcabinet for said machine, said cabinet comprising a pack fitted aroundthe frame of the machine, means to secure said pack to said frame, acover pivoted on said pack, said cover being inclined upwardly andforwardly at the bottom, and a front plate secured to the frame of themachine, said front plate having inclined flanges to serve as a closingabutment for said cover.

l0. The combination with a typewriting machine including a carriagehaving fingerpieces, of a sound-proof cabinet to completely enclose saidmachine except the keyboard extension, said cabinet comprising a packfitted closely around said frame and absorbing vibrations therefrom, acover pivoted on said pack, a detachable front plate, said cover andfront plate co-operating to form a carriage chamber of substantiallygreater length than the pack and overhanging the same, and means topartially open said cover to form a hand-hole to give access to thenger-pieces on the carriage of the machine at all positions of saidcarriage.

l1. The combination with a typewriting machine having a carriage andcontrolling levers therefor, and including a frame and tapped holes forreceiving supportil'lg feet, of a casing, comprising three sections,namely, a lower member around the frame and fastened thereto by means ofsaid feet, a hood pivoted on said lower member and a front closurefastened to the frame of the machine, for effectively enclosing theopening formed between the lower member and the hood, the three sectionscompletely enclosing the typewriter except for the keyboard sectionwhich protrudes through an opening at the front.

12. The combination with a typewriting machine having a carriage andcontrollinglevers therefor, andincludinlp,l a frame and tapped holesvfor receiving supporting feet, of a casing, comprising three sections,namely, a lower member around theframe and fastened thereto by means ofsaid feet, a hood pivoted on said lower member and a front closurefastened to the frame of the machine, for effectively enclosing theopening formed between the lower member and the hood, the three sectionscompletely enclosing the typewriter except for the keyboard sectionwhich protrudes through an opening at the front, and means whereby thehood may be partially opened by swinging the same to the rear to giveaccess to the controlling levers on the carriage.

13. The combination wit-h a typewriting machine having a carriage andcontrolling levers therefor, and including a frame and tapped holes forreceiving supporting feet, of a. casing, comprising three sections,namely, a lower member around the frame and fastened thereto by means ofsaid feet, a hood pivoted on said lower member and a front closurefastened to the frame of the machine, for effectively enclosing theopening formed between the lower member and the hood, the three sectionscompletely enclosing the typewriter except for the keyboard sectionwhich protrudes through an opening at the front, and means whereby thehood may be partially opened by swinging the same to the rear to giveaccess to the controllingl levers on the carriage, said means comprisinga plunger operatively mounted in said front closure and held in itseffective position by means of a spring, a button for operating saidplunger and a rib forming an integral part of said hood and operativelyengaging said plunger.

14. The combination with a typewriting machine having a carriage andcontrolling levers therefor, and including a frame and tapped holes forreceiving supporting feet, of a casing, comprising three sections,namely, alower member around the frame and fastened thereto by means ofsaid feet, a hood pivoted on said lower member and a front closurefastened to the fram-e of the machine, for effectively enclosing theopening formed between the lower member and the hood, the three sectionscompletely cnclosing the typewriter except for the keyboard sectionwhich protrndes through an opening at the front, means whereby the hoodmay be partially opened to give access to the controlling levers of thecarriage, and means whereby the hood may be fully opened to give accessto a work-sheet to manipulate the same.

15. The combination with a typewriting machine having a carriage andcontrolling levers therefor, and including a frame and tapped holes forreceiving supporting feet, of a casing, comprising three sections,namely, a lower member around the frame and fastened thereto by means ofsaid feet, a hood pivoted on said lower member and a front closurefastened to the frame of the machine, for effectively enclosing theopening formed between the lower member and llil the hood, the threesections completely ento give access to a work-sheet to manipulateclosing the typewriter except for the leythe same, said last-mentionedmeans combozud section which protrudes through an prising a stop-devicefor determining the 10 opening at the front, means whereby the amountthat the hood may be opened and 5 hood may bepartially opened to giveaccess a spring to assistJ the swing of the hood to the controllinglevers of the carriage, and while being opened. means whereby the hoodmay be fully opened JOHN VVALDHEIM.

